Review on recent progress on mid-infrared fiber lasers

Zhang, Pu; Wang, X.; Ma, Yanxing; Lü, Hongliang; Liu, Zejin

doi:10.1134/s1054660x12110199

Cited by 87 publications

(52 citation statements)

References 45 publications

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“…Recently, fiber lasers operating in the mid-infrared region at room temperature are of great interest due to their important potential applications in laser micro-surgery, tissue welding and in situ spectroscopy [1][2][3][4][5][6]. Among various rare earth ions, Dy 3+ is an important candidate to provide 2.9 m emission due to its 6 H 13/2 → 6 H 15/2 transition.…”

Section: Introductionmentioning

confidence: 99%

2.9μm emission properties and energy transfer mechanism in Dy3+/Tm3+-codoped tellurite glass

Huang

et al. 2015

Materials Science and Engineering: B

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Section: Introductionmentioning

confidence: 99%

2.9μm emission properties and energy transfer mechanism in Dy3+/Tm3+-codoped tellurite glass

Huang

et al. 2015

Materials Science and Engineering: B

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“…This mainly relies on the two unique features of this wavelength range: (1) well-known atmospheric transparency windows are located in this wavelength range; (2) various molecules have strong rovibronic absorption lines in this ‘molecular fingerprint’ region of the electromagnetic spectrum1. So far, glass-based materials (conventional glass and glass ceramics materials) may be the most important material used for optical fiber production678. However, MIR emission at ~3 μm is the closely spaced energy levels transition, which is liable to be quenched by multiphonon non-radiative decay, hence, it seems difficult to obtain intense MIR emission in most glass-based materials.…”

mentioning

confidence: 99%

Controllable Phase Transformation and Mid-infrared Emission from Er3+-Doped Hexagonal-/Cubic-NaYF4 Nanocrystals

Yang

Chen

et al. 2016

Sci Rep

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The morphology of hexagonal phase NaYF4:Er3+ nanorods synthesized by hydrothermal method changed greatly after a continuing calcination, along with a phase transformation to cubic phase. Photoluminescence (PL) spectra indicated that mid-infrared (MIR) emission was obtained in both hexagonal and cubic phase NaYF4:Er3+ nanocrystals for the first time. And the MIR emission of NaYF4:Er3+ nanocrystals enhanced remarkably at higher calcination temperature. To prevent uncontrollable morphology from phase transformation, the cubic phase NaYF4:Er3+ nanospheres with an average size of ~100 nm were prepared via a co-precipitation method directly. In contrast, the results showed better morphology and size of cubic phase NaYF4:Er3+ nanocrystals have realized when calcined at different temperatures. And PL spectra demonstrated a more intense MIR emission in the cubic phase NaYF4:Er3+ nanocrystals with an increasing temperature. Besides, the MIR emission peak of Er3+ ions had an obvious splitting in cubic phase NaYF4. Therefore, cubic phase NaYF4:Er3+ nanospheres with more excellent MIR luminescent properties seems to provide a new material for nanocrystal-glass composites, which is expected to open a broad new field for the realization of MIR lasers gain medium.

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“…This is mainly due to the strong absorption band by water around this wavelength, which makes mid-infrared fiber lasers suitable for various applications including medical surgery, remote sensing, and atmosphere pollution monitoring1234. The merits of good beam quality, high conversion efficiency, power scalability and excellent heat dissipation promote fiber lasers greatly developed compared with bulk solid state lasers5.…”

mentioning

confidence: 99%

Mid-infrared fluorescence, energy transfer process and rate equation analysis in Er3+ doped germanate glass

Wei

Chen

Cai

et al. 2014

Sci Rep

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Er3+ doped Y2O3 and Nb2O5 modified germanate glasses with different Er3+ concentrations were prepared. J-O intensity parameters were computed to estimate the structural changes due to the additions of Y2O3 and Nb2O5. The main mid-infrared spectroscopic features were investigated. To shed light on the observed mid-infrared radiative behavior, 975 nm and 1.53 μm emission spectra along with their decay lifetimes were also discussed. Moreover, the energy transfer processes of 4I11/2 and 4I13/2 level were quantitatively analyzed. In view of the experimental lifetimes, the simplified rate equation was utilized to calculate the energy transfer upconversion processes of upper and lower laser level of 2.7 μm emission. The theoretical calculations are in good agreement with the observed 2.7 μm fluorescence phenomena. Finally, the stimulated emission and gain cross sections were calculated and the results indicate that Er3+ doped germanate glasses have great potential for mid-infrared application.

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Review on recent progress on mid-infrared fiber lasers

Cited by 87 publications

References 45 publications

2.9μm emission properties and energy transfer mechanism in Dy3+/Tm3+-codoped tellurite glass

2.9μm emission properties and energy transfer mechanism in Dy3+/Tm3+-codoped tellurite glass

Controllable Phase Transformation and Mid-infrared Emission from Er3+-Doped Hexagonal-/Cubic-NaYF4 Nanocrystals

Mid-infrared fluorescence, energy transfer process and rate equation analysis in Er3+ doped germanate glass

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